Global Patent Index - EP 3546907 B1

EP 3546907 B1 20230104 - SELF-REGULATING HEATING SYSTEM FOR A TOTAL AIR TEMPERATURE PROBE

Title (en)

SELF-REGULATING HEATING SYSTEM FOR A TOTAL AIR TEMPERATURE PROBE

Title (de)

SELBSTREGELNDES HEIZSYSTEM FÜR EINE GESAMTLUFTTEMPERATURSONDE

Title (fr)

SYSTÈME DE CHAUFFAGE À RÉGULATION AUTOMATIQUE POUR UNE SONDE DE TEMPÉRATURE D'AIR TOTALE

Publication

EP 3546907 B1 20230104 (EN)

Application

EP 19165047 A 20190325

Priority

US 201815941520 A 20180330

Abstract (en)

[origin: EP3546907A1] A total air temperature (TAT) probe having a self-regulating heating system is provided. A TAT probe housing includes at least one heating cavity that is located proximate to a tip of the TAT probe. A heating element is received within the at least one heating cavity. The heating element is composed from a flexible material with a very high positive temperature coefficient (PTC) that provides non-linear resistance with temperature with generally relatively low electrical resistances at temperatures below freezing and relatively high electrical resistances above freezing. A power source is coupled to the heating element. The very high PTC material of the heating element causes less power to be drawn by the heating element from the power source at higher temperatures above freezing than the power drawn by the heating element from the power source at lower temperatures below freezing to maintain a desired temperature of the TAT probe.

IPC 8 full level

G01K 13/02 (2021.01)

CPC (source: CN EP US)

G01K 1/08 (2013.01 - CN US); G01K 13/006 (2013.01 - CN); G01K 13/028 (2013.01 - EP US); G01K 2203/00 (2013.01 - CN); H05B 2203/022 (2013.01 - US)

Citation (examination)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 3546907 A1 20191002; EP 3546907 B1 20230104; CN 110319942 A 20191011; CN 110319942 B 20230919; US 11105691 B2 20210831; US 2019301949 A1 20191003

DOCDB simple family (application)

EP 19165047 A 20190325; CN 201910224990 A 20190322; US 201815941520 A 20180330